Dumping-car.



T. LAWSON. DUMPING GAR. YAPPLQIOATION FILED DEC. 1'2, 1907.

- Patented Aug.'24, 1909.

SHEETS-SHEET 2.

INVENTOH V Br ATTORNEYS Illllll I WITNESSES Y mm M I T. LAWSON. BUM-PING GAR. APPLICATION FILED DEC; 12, 1907. 931,933. Patented Aug: 24, 1909.

5 SHEETS-SHEET a.

INVENTOH flamawlawuam I By ATTORNEYS T. LAWSON.

DUMPING GAB..- APPLIOATIQN PILEDDEO.12, 1907.

Patented Aug. 24,1909.

5 SHEETS-SHEET 4.

ATTORNEYS WITNESSES T. LAWSON.

7 PUMPING GAE. A P PLIUAT IO N FILED DEC. 12, 1907.

Patented Aug. 24; 1909.

' 5 SHEETS-SHEET'E.

Y WITNESSES Y Uurra Ariana: onion.

THOMAS I AWSOIt', 0Z5 E0213, N. Y.

DUMPLNG-GAR.

Application filed December 12, 1997.

'To allwhom it may concern:

l3e it known that I, THOMAS Lawson, a citizen of the United States, and'a resident of the clty of New York, borough of Manhattan, in the county and State of New York,

' and especially of the means for tilting the box and opening the doors thereof.

My invention further seeks to simplify the construction of the cars and to promote cheapness of manufacture and ease of operation of the same. 7

Reference is to be had to the accompany ing drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 shows my improved dumping car complete, and illustrates the normal position of the box, in which position the doors are closed; Fig. 2 is an enlarged detail section showing the cylinder and piston used. for applying power to the car body for the purpose of actuating the same relatively to the under frame; Fig. 3 is a fragmentary plan of the box showing in dotted lines the cylinders used for applying power thereto,

and also showingin dotted lines how these cylinders are connected with the box; Fig. 4 is an end elevation of the car complete, showing injfull' lines the box and certain other movable parts, occupying'their respective normal positions, and showing in dotted lines the box tilted obliquely for the purpose of dumping, and also showin one of the doors as raised to facilitate this operation; Fig. 5 is a vertical cross section upon the line 55 of Fig. 1, looking in the direction of the arrow, and showing particularly the arrangement of. the cross levers, which I designate as compensating levers and the connection of these with the box and with rigid brackets-carried bythe underframe, and indicating by dotted and full lines the relative movements of these compensating leversyand Fig. 6 is a vertical cross section Specification. of Letters li atent.

plates 16*.

Patented Aug. 24, 1909.

Serial no. team.

upon the line 6-6 of Fig. 1, looking inthe direction of the arrow, this view showing how the car box is supported upon wheels resting upon arch frames carried by the under frame and controllable by the compen sating levers.

Truck beams are shown at 7, service wheels R and an under frame at 9. This under frame is provided with truss webs 10 connected with center sills 11, the latter comprising top and bottom plates 12, 13. The truss webs are braced by angle irons H. 15, 16. as will be understood from Fig. G.- The center sills are also provided with terminal ing straight at its middle portioaand bent obliquely downward from said middle pori'ion'and provided with braces 18, are mounted rigidly upon the under frame and aare disposed parallel with each other, being spaced. equidistant throughout practically A number of tracks 17, each be-- the entire length of the car. A numberof 4 brackets 19 are disposed upon opposite sides of the center sills and are provided with upwardly projecting cars 20. inflexible links 21, 22, which I designate as compensating links, are each provided with a facet 23,

and by aid of pivots 24, 25, are journaled upon the ears 20, as will be understood from Fig.

The upper ends of the links 21, 22 are connected by pivots 26, 27 with cross beams 28 which are connected with and depend from a floor sheet 29 forming a part of the car box.- The facets 23 are for the purpose. of enabling the-links 21, 22 to make a good mechanical contact with the floor sheet and thus to partially support the latter whenever the car body is tilted, as hereinafter described.

A number of rollers 30 each journaled within a roller bracket- 31, are mounted upon the under side of the fioor 'sheet 29 and sustain the great bulk ofthe weight of the car box. These rollers rest upon the tracks 17,

as will be understood from Fig. 6, and are adapted to ride in the general direction of the length. of the tracks mentioned. Doors are mounted upon the car body and are provided at their upper edges with angle irons 32 forming flanges whereby "the, doors are strengthened; These doors are connected with end plates 33, 34: integral therewith, as indicated in Fig. 3, the end plates 33, 34

beingsubstantiallv trian ular in section. as 1 i 9 will be understoodfrom Fi 4. and bein journaled upon pivots 36 carried by stationarywalls The doors 32 are adapted to be opened, and in opening they turn upon an imaginary axial line passing through the two pivots 36 (see Figs. 3, at and Each door 82 is provided at its bottom with an angle iron mounted upon' the walls 37 and are provided with rollers 42, as will be ltIKlGl'StOOCl from Fig. 4:. i

The end plates 2-33, Slare provided with tracks 42 made of angle iron, these tracks being riveted directly to the end plates and engaging the rollers 42. ii henever the car body is tilted. one of the tracks L2, by hearing upon its corresponding roller e2, prevents the descent of the end plates 33, 3st

upon which the track is mounted, and this raises one of the doors 82, as indicated by dotted lines in Fig. 4.

Mounted upon the floor sheet 29 are fastenings 43, 44. disposed adjacent to opposite ends of the car. Connected securely with the fastening i3 is a cord 45 which e ngag a pulley 4.6 journaled upon a bracket ll. The cord 45 is provided with a portion 48 which is connected with a piston rod 49, the latter working in a cylinder 50, as will be iu'iderstood from Fig. 2. A piston 51, slidably mounted within this cyiii'ider. is con nected rigidly with the piston rod -19. Another piston rod -19? is connected with the piston 5t and con. itutes practically a continuation of the pistoi'i rod 49. o

Iipes 52, are connected with the cylinder 50 for the purpose of supplying to it an expansive. niediun'i such as steam or air for the purpose of moving the piston 51. These pipes also serve to permit the exhaust of the expansive tluid after its use.

Connected with the piston .rod 49 is a cord 5% which engages a pulley mounted upon a bracket 56. This cord is continued at ST and is secured to the fastening a l upon the car body. The *ord also engages a pulley 58 journaled u on a bracket- 59 and is connected with a piston rod (50. This piston rod is of the same character as those above described. It enters the cylinder 61 which is provided with pipes (32, 03. Another piston rod is shown at 6st and is connected with the cord -15, which passes around a pulley 46 j ournaled in abracket 65, and is secured to the car body by a fastening 4-3.

The arrangement of the pistons, piston rods and cords is such that when the piston rods are moved by the application of steam or compressed air to either or both of the cylinders, the cords are drawn in either of two directions andthus cause the car body to tilt. Itwill'be observed that While all of the cords are taut at all times, the tightening of the cord by pulling it. inone 'directioncauses a corresponding slackening of some other cord so that the car body may tilt freely.

The operation of my device is as follows: he car body being in its normal position, the doors are closed by their own weight. Suppose, now, that. it be desired to dump the car. The operator, by control of either or both of the cylinders 50, 61 above described, causes one of the cords to be drawn and the piston and the other cord to be relaxed, so that the car body is subjected to an unbalanced stress. Suppose that this .is to the left of Figs. 5 and 6. The upper end of the link 21 turns upon the pivot 25 as a center, and thus tends to assume aposition nearer vertical than that indicated in Fig. 6. The link 25:, howcvenlends to become more nearly horizontal. These two movements of the link, it will readily 'be seen, cause the rollers 30 to more upon the tracks 17 so that the car body tilts, as indicated by dotted lines in Figs.- 5 and 6. When the car body is to be restored to its normal position, the pull on the cords is reversed and this causes a reversal of the action just described, so that tlze car body is restored to its original po sition.

I call special attention to the arrangement of the compensating links 21, 22. These links being crossed and pivotally connected as they are, allow the car body to turn with a minimum of. friction and yet. with a positiveness of movement not easily obtained by other mechanisms heretofore used for analogous purposes. The definite movement of the linksnecessarily means a definite position for the car body used and vice Versa. T he tracks 17 are built upon straight lines inclined slightly in relation to each other, and this form gives the car body the ideal amount of inclination without raising the weight carried by it.

lVhile the car I show is a so-called single box car I do not limit myself to thisparticular construction. Neither do I limit myself to the particular construction of any of the parts shown, the scope of my invention being commensurate with my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. Ina dumping car, the combination of an under frame, a car body movable relatively thereto, a door mounted upon said car body, a track mounted upon said door, a support mounted upon said under frame at a point adjacentto. said track, and a revoluble member mounted upon said support and engaged by said: track-for the purpose of openingsaid door. .5 2. In a dumping car, the combination of an under frame,-=aicar body mounted thereover, a door for opening and closing said car body, said door being provided with. end plates ofsubstantially triangular form, 110 pivots mounted upon said car'body and engaging said ,end platesso as-to allow th e latteri tof'turn, tracks mounted upon said end -plates, and a stationary roller supported bysaid under frame and disposed Within the pathoit' said tracks so fas to be engaged therebyassaidcar. body is tilted. I y

In a dumping can-the combination of tin-under frame, a Wall mounted thereupon and: provided With-an upper surface havin 291 f substantially semicircular. shape, the ends .Of Walljithuslbeing higher than; the

'cen ea thereof, brackets mounted upon said ends-,ijollers carr ediby said bracketsami fnounted'over said unde r frame and adapted. tofltilt relatively thereto, doors 'mounted upon.- said car body, tracks. connested 'iigidly; wi-tli'said doors and engage ing 's'aid'rollers, and means for tilting saidoar'bo'dy relatively 'tosaid under irarhe.

43o 4: The combination" ofan under frame,

can-body mounted .t'hereoverand' provided,

with a bottom," links connecting' said under frame With-said car body for this purpose of v maintainingsaid oar body'and said under fi2m8 in a predetermined Working relation,

"Said links being provided with faces for engaging the bottom of said car body inorder toforni a partial support forthe' same.

:5; In a car, the'combinat-ion of an under ame provided with a supportingmember, bracketsdisposedin pairs' and mounted upon opposite sides of said supporting member, saidbrackets extending upwardlyltherefrom, inflexible flinks journaled upon said 45 brackets-and arranged in pairs corresponding to the pairs of saidbrackets, the links of each pairbeing crossed, a car body connected with said links, and supports inde- "car body. o

pendent of said links 'for sustaining said car bodv.

6. In a dumping car, the combination .of

said under frame, a car body, ,revoluble,

members inount-ed upon the under sidejof said car body and engaging said tracks, and

inflexible links pivotallv connecting-said'ca'r body with said underiiirame, the number-0f said inflexible links being independent, of I the number ofsaid tracks.

f 1. In a dumping'car, the combination of 'an-under frame, aplurality oftracks carried :thereby, said tracks being disposed at in- .tervals throughout the entireIlengt-h Of SZllCl g. under frame, a car body, revoluble inembers mounted thereupon and engaging said I tracks; and inflexible liaiks connecting said car body with said under frame- 7 v 8. In a dump1ng:car,'the combination of an under frame, a plurality oftracks mount I ed acrosssaid under frame and disposed at intervals throughoat the entire length of the same, a car bodyyrevoluble members mount-r ed upon said carbody andengaging' said- "tracks, and inflexible linkspivotally connected ,with saidcar body and with said under frame.

9311i a dumpingoar, the combination of an under frame provided with a longltud1- nal centralQmembei extending throughout its entire lengtli, brackets mounted upon said central .member and projectingupwardly therefrom, links pivotally .mounted upon said brackets, a car body disposed over said links and connected thereto, and means coracting with said 'linksfor tilting said In testimony whereof I have signed my name to this specification in the (presence of two subscribing witnesses.

. THOMAS LAWSON. \Vitnesses':

VALTON HARRISON,

Evnesnn B. MARSHALL. 

